Chapter 3: Data and Stream Processing

1. Which operator is used to select data elements from a stream?

• filter
• filterWhen
• take
• takeLast
• last
• distinct
• single
• elementAT

2. Which operator is used to reject data elements from a stream?

• filter
• filterWhen
• skip
• skipLast
• SkipUntil
• ignoreElements

3. Which operators does Reactor offer for data conversion? How are these operators different from each other?

• map: This is used for one-to-one transformation
• flatMap: This is used for one-to-n transformation

4. How can we perform data aggregation by using Reactor operators?

• collectList
• collectMap
• collectMultiMap

5. Which conditional operators are offered by Reactor?

• all: Represents the AND operator
• any: Represents the OR operator